The 120 Guide
Questions about focus, deep work, flow state, and the philosophy and ancient wisdom behind The Black Tin.
What is The 120 Guide?
The 120 Guide is our free resource on focus, deep work, flow state, and the ancient and modern science behind The Black Tin. It is for anyone who wants to understand why distraction wins and how to take back the work that matters. For more help, What
Why is 120 minutes the right window for deep work?
Research on peak cognitive performance consistently shows the human brain sustains genuine deep focus for 90 to 120 minutes before it needs real rest. 120 minutes is the upper edge of that window — the maximum you can extract before the return on you
What is flow state and how does The Black Tin help me reach it?
Flow state is the condition where your full attention locks onto 1 task and your performance rises well above your normal level. It requires removing all competing stimulation and committing to a single task long enough for the brain to stop resistin
How does dopamine affect my ability to do deep work?
Dopamine is your brain's anticipation signal. Every notification, scroll, and distraction triggers a small dopamine response. Over time this raises your brain's stimulation baseline. Deep work — slow and low stimulation by nature — starts to feel imp